why won't my laptop upload pictures/video to the internet?

It's a fairly up to date laptop and always manages to baffle people even people that know what they are on about so i challenge anyone to please help me with this. It basically won't let me upload anything like pictures and video to bebo or youtube, things like that. I also seem to have a problem playing games. It's not a frame rate issue though but it stutters like it is trying to load something or like it's struggling even with simple games like half life 1 etc.